Rigging - Martin Professional MAC TW1 User Manual

Rigging

The MAC TW1 can be placed on stage or clamped to a truss in any orientation. The mounting points allow
the clamp brackets to be fastened parallel or perpendicular to the front as shown Figure 5.
DANGER! Use two clamps to rig the fixture. Lock each clamp by turning both 1/4-turn
fasteners fully clockwise. Attach an approved safety cable to the attachment point labelled
"SAFETY WIRE" in the base. Do not use the carrying handles for secondary attachment.
To clamp the fixt ure on a truss
1. Check that the rigging clamps are undamaged and can bear at least 10 times the weight of the fixture.
Check that the structure can bear at least 10 times the weight of all installed fixtures, clamps, cables,
auxiliary equipment, etc.
2. Bolt each clamp securely to a clamp bracket with a minimum grade 8.8 M12 bolt and lock nut.
3. Align a clamp with 2 mounting points
in the base. Insert the fasteners into
the base and turn both levers a full
1/4-turn clockwise to lock. Install the
second clamp.
4. Block access under the work area.
Working from a stable platform, hang
the fixture on the truss with the arrow
on the base towards the area to be
illuminated. Tighten the rigging
clamps.
5. Install a safety wire that can bear at
least 10 times the weight of the
fixture. The attachment point is
designed to fit a carabiner clamp.
6. Check that the tilt lock is released.
7. Check that there are no combustible
materials or surfaces to be illuminated
within 0.5 m (20 in.) of the fixture, and
that there are no flammable materials
nearby.
8. Allow a center-to-center distance of
550 mm (21.7 in.) minimum between
MAC TW1 fixtures. Increase this
distance if accessories are fitted to
the front of the head. Check that
heads will not collide with other
fixtures.
Figure 5: Clamp bracket positions and safety wire attachment point
Figure 6: Head movement and fixture spacing
Rigging 15